ML20236X067

Reg Guide 1.156,Task Ee 404-4, Environ Qualification of Connection Assemblies for Nuclear Power Plants

ML20236X067
Person / Time
Issue date:	11/30/1987
From:	NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES)
To:
References
TASK-EE-404-4, TASK-RE REGGD-01.156, REGGD-1.156, NUDOCS 8712080402
Download: ML20236X067 (4)

Text

V U.S. IBUCLEAR REGULATORY COMMISSION November 1987 g (p*gj REGULATORY GUIDE

• • s OFFICE OF NUCLEAR REGULATORY RESEARCH REGULATORY GUIDE 1.156 (Task EE 404-4)

ENVIRONMENTAL QUALIFICATION OF CONNECTION ASSEMBLIES FOR NUCLEAR POWER PLANTS i

A. INTRODUCTION B. DISCUSSION Criterion III," Design Control," of Appendix B," Quality IEEE Std 5721985, " Qualification of Class IE Connec-Assurance Criteria for Nuclear Power Plants and Fuel tion Assemblies for Nuclear Power Generating Stations,"*

Reprocessing Plants,"

to 10 CFR Part 50, " Domestic published in September 1985, was prepared by Subcom-Licensing of Production and Utilization Facilities," requires, mittee 2," Qualification," of the Nuclear Power Engineering among other things, that, where a test program is used to Committee of the Institute of Electrical and Electronics verify the adequacy of specific design features, it include Engineers (IEEE) and was approved by the IEEE Standards suitable qualification testing of a prototype unit under the lloard on December 13,1984 (and amended on Septernber most adverse design conditions.

25, 1987). This standard describes basic procedures for qualifying connection assemblies (for example, quick-Section 50.49, " Environmental Qualification of Electric disconnect connection assemblies and environmental seals Equipment important to Safety for Nucicar Power Plants,"

in combination with cables as assemblies).

of 10 CFR Part 50 requires that certain electric equipment important to safety be qualifi ed for its application and Guidance on seismic qualifienion for this equipment is specified performance. Section 50.49 also states require-suggested in Regulatory Guide 1.100, " Seismic Qualifica-ments for establishing environmental qualification methods tion of Electric and Mechanied Equipment for Nuclear and qualification parameters.

Power Plants"(Proposed Revision 2, Task EE 108-5).

This regulatory guide describes a method acceptable to Section 50.49 of 10 CFR Part 50 defines three categories the NRC staff for complying with the Commission's regula-of electric equipment that are required to be environmentally tions with regald to the environmental qualification of qualified : (1) safety-related equipment,(2) nonsafety-related quick-disconnect connection assemblies and environmental equipment whose failure could adversely affect safety-related seals in combination with cables or wires as assemblies for equipment, and (3) certain post-accident monitoring servicein nuclear power plants. The environmentalqualifica-equipment. This regulatory guide provides an acceptable tion is to ensure that connection assemblies ran perform method of qualifying quick-disconnect connection assemblics their safety functions outing and after a design basis event.

and environmental seals in combination with cables or wires as assemblies for all three categories of equipment.

The Advisory Committee on Reactor Safeguards has been consulted concerning this guide and has concurred in IFl E Std 572-1985 contains references to other national the regulatory position.

standards. Those standards that are referenced but not endorsed by NRC are expected to be used in a manner Any information collection activities mentioned in this consistent with regulatory practice, regulatory guide are contained as requirements in 10 CFR Part 50, which provides the regulatory basis for this guide.

, copies may be urchased from the institute of ilectrical and The information collection requirements in 10 CFR Part 50 13ectronics Engineers pervice Center,445 lloes Lane, P.O. Box 133t, have been cleared under OMB Clearance No. 3150-0011.

Pbcataway, NJ 08855.,

8712080402 871130 PDR REGOD 01.156 R PDR USNRC REGULATORY GUIDES The guides are issued in the following ten broad divisions:

Regulatory Guides are issued to describe and mal <e available to the pubhc methods acceptable to the NRC staff of implementing

1. Power Reactors

6. Products specific parts of the Commission's regulations, to dehneate tech-

2. Research and Test Reactors

7. Transportation nlclues used by the staff in evaluating specific problems or postu-

3. Fuels and Materials f acehties

8. Occupational Health lated acc6 dents, or to prov6de guidance to applicants. Regulatory

4. Environmental and Siting

9. Antitrust and F6nancial Review Guides are not substitutes for regulations, anu compliance with

5. Materials and plant Protection 10. General them is not reautred. Methods and solutions diffe ent f rom those set 9

out in the guides will be acceptaDie af they provide a basis for the fmdings requisite to the 6ssuance or cont 6 nuance of a permit or Copies of issued guides may be purchased f rom the Government hcense by the Commission.

Print 6ng Off ace at the current GPO price. Information on current GPO prices may be obtained by contact 6ng the Superantencent of This gu6de was issued af ter consideration of comrnents received from Documents.

U.S. Government Printlnq O f fice, Post Of fice Box the public. Comments and suggestions for improvements in these 3 7082, Washington, DC 20013-7082, telephone (202)2 75 2060 or guides are encouraged at all times, and guides will be revised, as (202)275-2171.

appropriate, to accommodate comments and to reflect new informa-tion or experience.

Written comments may be submitted to the Rules and Procedures Information Service on a standing order basis. Details on this Branch, D A R,

ADM, U.S.

Nuclear R egulat or y Commission, service may be obtained by writing NTIS, r.28b Port Royal Road, Washington, DC 20b5 5.

Springfield. V A 22161.

C. REGULATORY POSITION Except in those cases in which the applicant orlicensee proposes an acceptable alternative method for complying t

When used in cordunction with Regulatory Guide 1.89, with specified portions of the Commission's regulations, the

" Environmental Qualification of Certain Electric Equip-methods described herein will be used in the evaluatbn of ment important to Safety for Nuclear Power Plants," the the qualification of connection assemblies, within the scope procedures descded by IEEE Std 5721985 are acceptable of this guide, for nuclear power plants as follows:

to the NRC staff for satisfying the Commission's regula-tions pertaining to the environmental qualification of

1. Plants for which the construction permit is issued quick-disconnect connection assemblies and environmental after November 30,1987, seals in combination with cables or wires as assemblies for service in nuclear power plants to ',ure that the connee-tion assemblies can perform their safety functions.

2. Plants for which the operating license application is docketed 6 months or more after November 30, O. IMPLEMENTATION

1987, The purpose of this section is to provideinformation to applicants and licensees regarding the NRC staff's plans for

3. Plants for which the applicant or licensee voluntarily using ;his regulatory guide.

commits to the provisions of this guide, k

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b,f 1 connection assemblics has been published by NRC.* In

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A i September 11985,. IEEE o issued IEEE Std 572-1985,-

. The standard endorsed by this regulatory guide represents

j L." Qualification. of. Class IE Connection ' Assemblies for a nationalconsensus on qualification methods to ensure the ~ '

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j Nuclear 1 Power : Generating ; Stations,") which. provides '

reliability and function of connection assemblics used ini

'"specificJ guidance forJ the ; qualification of connection' nuclear power plants. It provides a standardized approach so :

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assemblies for usein nuclear power plants. This regulatory that industry and the NRC staff rnay have common under '

guide endorses IEEE Std $72-1985 without exceptions.

standing on connection assembly qualification and test.in'g[,.-

. procedures, thus minimizing related engineering costs by the ' ' "

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< i.This' regulatory guide vias issued for public comm' eat in

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(May 1937 as Task, EE 404-4. No comments werereceived Impact -

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, from the public, therefore, the guide is being issued with no y1

- This regulatory guids ' oes'not impose any' new costs or ;

d f changes as Regulatory Guide 1.156..

obligations on licensees or applicants. Thus, no adverse impact --

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,-R ulatory' Cuide 1.131. " Qualification Tests 'of Electric -

will result from the issuance of this guide; The guidance was

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Cables, ield Splicos - and " Connections for Lisht.WaterCooled '.

. developed through the national consensus standards process

. Nuclear Power Plants

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'1977.but not pubushed foHowing public comment.

. and reflects current NRC and industry practice.

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